com.mysql.jdbc.exceptions.jdbc4.CommunicationsException：通信リンクの障害ソフトウェアが原因で接続が中断しました：recv failed

Question

all。 私はいくつかの日のために問題が発生していが、これは詳細スタック情報です：

org.springframework.dao.RecoverableDataAccessException: 
### Error updating database. Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure 

The last packet successfully received from the server was 18,940 milliseconds ago. The last packet sent successfully to the server was 18,918 milliseconds ago. 
### The error may involve com.tuan800.searchtask.model.dao.mybatis.RelationDao.updateSuggest-Inline 
### The error occurred while setting parameters 
### Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure 

The last packet successfully received from the server was 18,940 milliseconds ago. The last packet sent successfully to the server was 18,918 milliseconds ago. 
; SQL []; Communications link failure 

The last packet successfully received from the server was 18,940 milliseconds ago. The last packet sent successfully to the server was 18,918 milliseconds ago.; nested exception is com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure 

The last packet successfully received from the server was 18,940 milliseconds ago. The last packet sent successfully to the server was 18,918 milliseconds ago. 
    at org.springframework.jdbc.support.SQLExceptionSubclassTranslator.doTranslate(SQLExceptionSubclassTranslator.java:98) 
    at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72) 
    at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80) 
    at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:71) 
    at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:346) 
    at $Proxy10.update(Unknown Source) 
    at org.mybatis.spring.SqlSessionTemplate.update(SqlSessionTemplate.java:245) 
    at com.tuan800.searchtask.model.dao.mybatis.impl.RelationDaoImpl.updateSuggest(RelationDaoImpl.java:24) 
    at com.tuan800.searchtask.service.impl.RelationServiceImpl.modifyRelationCount(RelationServiceImpl.java:64) 
    at com.tuan800.searchtask.RelationIndexTask.main(RelationIndexTask.java:33) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:115) 
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure 

The last packet successfully received from the server was 18,940 milliseconds ago. The last packet sent successfully to the server was 18,918 milliseconds ago. 
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) 
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) 
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513) 
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:409) 
    at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1118) 
    at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3055) 
    at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2941) 
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3489) 
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1959) 
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2113) 
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2568) 
    at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2113) 
    at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:1364) 
    at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.execute(NewProxyPreparedStatement.java:989) 
    at sun.reflect.GeneratedMethodAccessor163.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at org.apache.ibatis.logging.jdbc.PreparedStatementLogger.invoke(PreparedStatementLogger.java:45) 
    at $Proxy20.execute(Unknown Source) 
    at org.apache.ibatis.executor.statement.PreparedStatementHandler.update(PreparedStatementHandler.java:22) 
    at org.apache.ibatis.executor.statement.RoutingStatementHandler.update(RoutingStatementHandler.java:51) 
    at org.apache.ibatis.executor.SimpleExecutor.doUpdate(SimpleExecutor.java:29) 
    at org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:88) 
    at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:121) 
    at sun.reflect.GeneratedMethodAccessor165.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:338) 
    ... 10 more 
Caused by: java.net.SocketException: Software caused connection abort: recv failed 
    at java.net.SocketInputStream.socketRead0(Native Method) 
    at java.net.SocketInputStream.read(SocketInputStream.java:129) 
    at com.mysql.jdbc.util.ReadAheadInputStream.fill(ReadAheadInputStream.java:114) 
    at com.mysql.jdbc.util.ReadAheadInputStream.readFromUnderlyingStreamIfNecessary(ReadAheadInputStream.java:161) 
    at com.mysql.jdbc.util.ReadAheadInputStream.read(ReadAheadInputStream.java:189) 
    at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2499) 
    at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2952) 
    ... 32 more 

私はMyBatisの春によるMySQLでレコードを更新したい、と私はそれを一つずつ更新し、以下のMyBatisの設定は次のとおりです。 誰

for(RelationBvo relation : list){ 

     Long totalCount = solrDealService.queryResult(relation.getWord(),null,null,0); 

     relation.setCount(totalCount.intValue()); 

     if(relation.getFreq() == 0){ 
      relation.setFreq(1); 
     } 

     ***relationDao.updateSuggest(relation);//update record*** 

     executedCount++; 

     logger.info("Program have executed "+executedCount+" records."); 
} 

ができる： 更新提案は、カウント=＃{カウント}バージョン=＃{バージョン}、FREQ =＃{FREQ} ID =＃{ID}

とサービスコードを設定しますヘイp私？ありがとう。

Answer 1

接続プールがそれらを認識する前に、mySQL接続がタイムアウトしています。この問題を解決するために、複数の方法があります。

1. は、MySQL設定ファイルのタイムアウト値を増やします（my.iniファイル）
2. MySQLを閉じます前に、それは接続を破棄するように、あなたの接続プール内のアイドル時間を削減それはあなたにそれを与える前に各接続をテストするようにプール設定でvalidate接続クエリを追加しますが、これはひどくシステムを遅くする可能性があります。